function swapme(chi, suffisso) {
	document [chi].orsrc = document [chi].src;
	document [chi].src = suffisso+"/img/"+chi+"_over.gif";
}
function swapback(chi) {
	document [chi].src = document [chi].orsrc;
}
function openwindow(url,name,width,height,scroll) {
window.open(url,name,'toolbar=no,resizable=no,directories=no,status=no,menubar=no,scrollbars=' + scroll + ',width=' + width + ',height='+ height +',left=50,top=50');
}